摘要
Using gauge/gravity duality,we investigate the string breaking and dissolution of two heavy quarks coupled to a light quark at finite temperature.It is found that three configurations of QQq exist with the increase in separation distance for heavy quarks in the confined phase.Furthermore,string breaking occurs at the distance L_(QQq)=1.27 fm(T=0.1 GeV)for the decay mode QQq→QQq+Qq.In the deconfined phase,QQq melts at a certain distance and then becomes free quarks.Finally,we compare the potential of QQq with that of QQ,and it is found that QQ is more stable than QQq at high temperatures.
作者
Xun Chen
Bo Yu
Peng-Cheng Chu
Xiao-hua Li
陈勋;喻博;初鹏程;李小华(School of Nuclear Science and Technology,University of South China,Hengyang 421001,China;The Research Center for Theoretical Physics,Science School,Qingdao University of Technology Qngdao 266033,China;The Research Center of Theoretical Physics,Qingdao University of Technology Qigdao 266033,China)
基金
Supported by the National Natural Science Foundation of China(12175100,11975132)
the Research Foundation of Education Bureau of Hunan Province,China(21B0402,21A0280,20C1594)。
